Which of these is not a characteristic of most ionic compounds
a. Solid at room temperature
b. Has a low melting point
c. Conducts an electric current when melted
d. Produced by reaction between metallic and nonmetallic elements

B. Low Melting Point

Explanation:

Ionic compounds are lattice formations of alternating positive and negative ions, which are held by strong electrostatic forces between;

These result in a high melting and boiling point and solid phase at room temperature;

When liquified, the ions are free to move and can therefore carry current, meaning ionic compounds are conductive;

Ionic compounds are formed by transfer electrons from a non-metal to a metal atoms.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.